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St. Mark Catholic School is located on the southwest corner of Alma Drive and 15th Street in Plano,Texas. The school building is located on the St. Mark Catholic Church campus, just south of the sanctuary.

Our location in central Plano is near the intersection of two major highways in the Dallas area -- one block west of I-75/Central Expressway and 1/2 mile north of the George Bush Tollway/Highway 190.

St. Mark is conveniently situated close to many area businesses and neighborhoods, the Richardson Telecom Corridor, and the regional and corporate headquarters locations of major national and international companies based in Plano and nearby cities including AT&T, Bank of America, Blue Cross Blue Shield, Capital One, Cigna, Cisco, Dr. Pepper Snapple, Ericsson, Fossil, Frito Lay, Fujitsu, HP, J.C. Penney, Raytheon, Samsung, State Farm, Toyota, and United Healthcare.